package com.atguigu.gmall.util;

import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class HttpclientUtil {
    public static String doGet(String url){
        //创建HttpClient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        //创建http get请求
        HttpGet httpGet = new HttpGet(url);
        CloseableHttpResponse response = null;
        try{
            //执行请求
            response = httpClient.execute(httpGet);
            //判断返回状态是否为200
            if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
                HttpEntity entity = response.getEntity();
                String result = EntityUtils.toString(entity, "utf-8");
                EntityUtils.consume(entity);
                httpClient.close();
                return result;
            }
            httpClient.close();
        }catch (Exception e){
            e.printStackTrace();
            return null;
        }
        return null;
    }
    public static String doPost(String url, Map<String,String> paramMap){
        //创建httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        //创建post请求
        HttpPost httpPost = new HttpPost(url);
        CloseableHttpResponse response = null;
        try{
            List<BasicNameValuePair> list = new ArrayList<>();
            for(Map.Entry<String,String> entry : paramMap.entrySet()){
                list.add(new BasicNameValuePair(entry.getKey(),entry.getValue()));
            }
            HttpEntity httpEntity = new UrlEncodedFormEntity(list,"utf-8");
            httpPost.setEntity(httpEntity);
            //执行请求
            response= httpClient.execute(httpPost);
            if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
                HttpEntity entity = response.getEntity();
                String result = EntityUtils.toString(entity, "UTF-8");
                EntityUtils.consume(entity);
                httpClient.close();
                return result;
            }
            httpClient.close();;
        }catch (Exception excetption){
            excetption.printStackTrace();
            return null;
        }
        return null;
    }
}
